package com.ddutra9.sistemas.util;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;

import org.hibernate.SessionFactory;

import com.ddutra9.sistemas.vendas.HibernateUtil;

public class ConexaoHibernateFilter implements Filter{
	
	private SessionFactory sf;

	@Override
	public void destroy() {
		// TODO Auto-generated method stub
		
	}

	@Override
	public void doFilter(ServletRequest servletFilter, 
			ServletResponse servletResponse,
			FilterChain chain) throws IOException, ServletException {
		
		try {
			this.sf.getCurrentSession().beginTransaction();
			chain.doFilter(servletFilter, servletResponse);
			this.sf.getCurrentSession().getTransaction().commit();
			this.sf.getCurrentSession().close();		
		} catch (Throwable e) {
			try {
				if(this.sf.getCurrentSession().getTransaction().isActive())
					this.sf.getCurrentSession().getTransaction().rollback();
			} catch (Throwable ex) {
				ex.printStackTrace();
			}
			
			throw new ServletException();
		}
		
		
	}

	@Override
	public void init(FilterConfig conf) throws ServletException {
			this.sf = HibernateUtil.getSf();
	}

}
